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<?php var_dump( array_filter( array( 45, '15', "'; -- \DROP TABLE alerts;", 1, 2, '3', 4 ), 'is_numeric' ) );
Output for git.master, git.master_jit, rfc.property-hooks
array(6) { [0]=> int(45) [1]=> string(2) "15" [3]=> int(1) [4]=> int(2) [5]=> string(1) "3" [6]=> int(4) }

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